Hi Ola, There aren't too many Mac users out here so don't hold your breath. Not a Mac user myself but I'll try to help anyway.
TL;DR: Ask the folks who maintain the sane-backends brew packages. Apologies for re-organizing your post a bit. I just find it easier to reply when the significant bits of the logs are inlined. Ola Andersson via sane-devel writes: > I would really like to get my old Canoscan 8800F to work with my > MacMini Mac OS 10.15.6 Catalina (latest) and when I discovered > SANE-Project I was initally very happy since my scanner was on the > list of supported devices. > Several days later after trying a bunch of different things, the > scanimage command, or XSANE GUI, it just doesn't work. Any help is > appreciated! > Below is a list of what I have tried, but I suspect this is some form > of permission problem with Mac OS >10.13, that has a new security > model. For instance developer need to place their software outside of > protected folders that are usually available on other OS's. Also as a > user you sometimes need to give apps access to folders, disk and other > things in the Security control panel. Another thing could be something > strange in the USB-communication, or that maybe the OS is marking the > scanner as busy with for some reason ( I have no way of finding that > out). But theese are just guesses. > Things I did: > > - Installed sane-backends using Brew. Brew is a package manager for > Mac OS that also installs any other library that is needed, and it > is regularly updated. This particualar package has support for Mac > OS 10.15, and installs sane 1.0.30, the very latest version. Source > is available at Github and the link to Brew shows what other > libraries are installed. libusb for instance. If you really think it's an issue with changes to the Mac OS security model, I think you'd be better of talking to the folks that provide the brew packages for sane-backends. They are sure to be more knowledgeable in that area. Most of us hanging out here are using Linux ... > - Some commands work now: > > - man sane > - man sane-pixma (In the list of supported scanners are my scanner, > Canoscan 8800F.) > - sane-find-scanner (output pasted below) > - sane-find-scanner -v -v (This gives very detailed output about > all connected USB-devices, incl my Caonscan 8800F , with same > manufacturer and model ID, but not serial number) as the next > command. > - scanimage -L (gives this output: "device `pixma:04A91901' is a > CANON Canoscan 8800F multi-function peripheral OK, at least scanimage is able to find your device. That's good news. > - This command doesn't work: > > $ scanimage --format="jpeg" --progress --output-file="scan1.jpg" \ > --resolution="600" --mode="color" --source="Flatbed" \ > --button-controlled="no" > scanimage: sane_read: Error during device I/O > > - Same result with sudo ifront. Dunno why. If you get the same results with sudo preprended, it's unlikely to be a permissions issue but then again I don't know anything about how Mac OS handles read/write access to the device. However, there may be something with the set of options you pass. Have you tried scanning with the defaults? That is, have you tried SANE_DEBUG_PIXMA=127 scanimage -o out.pnm 2> out.log and does that produce a good image in out.pnm? If not, we're interested in the out.log file. Oh, you already included that below. Good! > - Installed XSANE(also installed withBrew). > > - Tried scanning with this program, and I get this error message: > "Could not create file: Permission denied. I *think* that's xsane not being able to create its "state" files below $HOME/.sane/xsane/ (or the $HOME/.sane/xsane directory itself). Does that directory exist? Does it have a xsane.rc and/or xsane.mdf and/or a *.drc file that matches your device? > - I click Close, and get to the gui, click the button "Get preview" > and get the error message:"Error during reading: Error under unit > I/O)".The wording might differ, since my error messages are in > swedish. That's probably the same issue you see when using scanimage. > - Tried getting debug-info with these commands > > $ export SANE_DEBUG_PIXMA=21 > $ scanimage > test.pnm > Output format is not set, using pnm as a default. > [15:42:34.787160] [sanei_debug] Setting debug level of pixma to 21. > [15:42:34.788373] [pixma] pixma is compiled without pthread support. > [15:42:34.788782] [pixma] pixma version 0.27.0 > [15:42:34.791163] [pixma] pixma_collect_devices() found Canoscan 8800F at > libusb:020:010 > [15:42:34.791879] [pixma] WARNING:No serial number > [15:42:34.792158] [pixma] pixma_find_scanners() found 1 devices > [15:42:39.924269] [pixma] pixma_collect_devices() found Canoscan 8800F at > libusb:020:010 > [15:42:39.925280] [pixma] WARNING:No serial number > [15:42:39.925672] [pixma] pixma_open(): Canoscan 8800F > [15:42:39.926504] [pixma] OUT T=5.137 len=16 > [15:42:39.926541] [pixma] 00000000:ef 20 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 > [15:42:39.926558] [pixma] > [15:42:39.943538] [pixma] IN T=5.154 len=8 > [15:42:39.943584] [pixma] 00000000:06 06 00 00 00 00 00 00 > [15:42:39.943597] [pixma] > [15:42:39.944638] [pixma] Reader task id=11001 (forked) > [15:42:39.945097] [pixma] Reader task started > [15:42:39.945377] [pixma] > [15:42:39.945542] [pixma] pixma_scan(): start > [15:42:39.945686] [pixma] line_size=1914 image_size=1678578 channels=3 > depth=8 > [15:42:39.945826] [pixma] dpi=75x75 offset=(0,0) dimension=638x877 > [15:42:39.945965] [pixma] gamma_table=0x7fb98000ee40 source=0 > [15:42:39.946103] [pixma] threshold=127 threshold_curve=0 > [15:42:39.946242] [pixma] adf-wait=0 > [15:42:39.946380] [pixma] ADF page count: 0 > [15:42:39.946592] [pixma] WARNING:pixma_write(): count(0) != len(16) This looks like the pixma backend doesn't have write permissions to the device file. I would have expected `sudo` to "fix" this but there may be other, Mac OS specific, access controls at play. Again, I guess the brew folks would be your best bet. They ought to know much more about this than this Linux-only user of two decades and counting ;-) > Output in terminal from command xsane and also trying to get preview. If scanimage doesn't work for some reason, xsane is almost certainly not to work for the same reason. > - Also tried changing settings in the config-file, and also turned > them off again located > here:/usr/local/Cellar/sane-backends/1.0.30/etc/sane.d/pixma.conf. Some > lines that are now commented out again since they don't seem to > matter. > > - # Dunno what the correct name is for this param, but since my > scanner is connected with USB, I don't think it is > this:bjnp-timeout=5000 > - pixma-timeout=5000 > - usb-timeout=5000 > - timeout=5000 > - # Turned off networking > - networking=no As long as you are using USB, the above changes have no effect, AFAIK. > - # This is a suggestion from man sane-pixma, can't see it makes > any difference. > - usb 0x04a9 0x1901 This should not be needed for 1.0.30. The Canoscan8800F has been supported since sane-backends-1.0.21. > - I have also, per suggestion from man sane-pixma tried this command: > > - export SANE_USB_WORKAROUND=1 > - Which doesn't seem to help, so I have run same with a zero in the > end. > > - Lastly I have also tried installing the installers from this > page, they don't work either. > > - Mattias Ellert's binary installer packages of sane-backends, the > TWAIN SANE interface and related software. > - They are very old (over three years) and seems pretty useless, > even with Gimp. Mattias is no longer updating these :-/ > - Also several restarts, uninstalls and reinstalls. > - Tried two usb-cables. Hope this helps, -- Olaf Meeuwissen, LPIC-2 FSF Associate Member since 2004-01-27 GnuPG key: F84A2DD9/B3C0 2F47 EA19 64F4 9F13 F43E B8A4 A88A F84A 2DD9 Support Free Software https://my.fsf.org/donate Join the Free Software Foundation https://my.fsf.org/join
